Invoice due date calculator

Invoice date plus payment terms, landing on a real working day. Net-30 from mid-January 2027 crosses a weekend and then Presidents' Day; this calculator knows, because it runs on real holiday calendars for 250+ regions.

Country or region

Invoice date

Terms

How the terms work

net30 counts calendar days; net10b counts business days; eom is end of the invoice month; eom+15 adds calendar days after month end. Whatever lands on a weekend or holiday rolls forward to the next working day, the way receivables actually operate.

Need this in your application?

GET /v1/due-date?region=US&invoice_date=2027-01-15&terms=net30
  -H "X-Api-Key: $KEY"

One call, any region, 100 free requests a day. Batch a whole invoice run with /v1/batch.